Family of 20 enzymes (one per amino acid) that charge cognate tRNAs: aa + ATP + tRNA → aa-tRNA + AMP + PPi. Fidelity via editing domains; crucial for genetic code integrity.
Family of 20 enzymes (one per amino acid) that charge cognate tRNAs: aa + ATP + tRNA → aa-tRNA + AMP + PPi. Fidelity via editing domains; crucial for genetic code integrity.